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//Example 5.6
//Root locus for satellite attitude control with a
//Transition value for the pole.
xdel(winsid())//close all graphics Windows
clear;
clc;
//------------------------------------------------------------------
//System transfer function and its root locus
s=poly(0,'s');
sysL=(s+1)/(s^2*(s+9));
evans(sysL)
//Title, labels and grid to the figure
exec .\fig_settings.sci; // custom script for setting figure properties
title(['Root locus for', '$L(s)=(s+1)/(s^2(s+9))$'],'fontsize',3)
zoom_rect([-6 -3 2 3])
h=legend('');
h.visible = "off"
//------------------------------------------------------------------
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